Today's New York Times runs a great piece on how ballpark groundskeepers create those beautiful patterns in the grass. Here's the trick:

Rollers on a mower push the grass slightly forward. Blades bent away from the viewer capture more light and appear relatively pale; when the tips are bent toward the viewer, the grass looks darker. (So grass really can be greener on the other side.) The principle is nothing new to anyone who has run a vacuum back and forth on plush carpet or rubbed a hand over a velvet swatch.

The color palette is not wide, but three distinct shades of green can be created — light, dark and, by mowing across those stripes, something in between.

But you don't need to work for the Red Sox to create art in the grass. If you have a Neuton CE 6.2 you can use the lawn striper to create your own designs at home!